Question about LG 37LG50 37 in. LCD HDTV

1 Answer

Tv turns on then off right away

I can turn on the TV but after 2 seconds it turns off. Very frustrating.

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  • LG Master
  • 3,904 Answers

Power supply board needs to be replaced.

Posted on Apr 13, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: tv turns it self off after only 2-3 seconds and makes crack noise

Since the set is less than 1 year old, it should still be under warranty. Request warranty service.

The noise you are hearing is probably arcing inside the set on the power supply board. Continuing to attempt to turn on the set will only make things worse. Please request warranty service as this is unusual for a TV that new.

Dan

Posted on Jan 16, 2009

lightnbaby
  • 36 Answers

SOURCE: TV will turn on for 2-3 seconds and then turn off

Unplug power cord- safety first!
open backcover
check powersupply- top center right is p.s.
top left side of powersupply you'll see 5 capacitor 3300uF 10V.
see any pop up on top? replace it All with same rate or 16v is O.K.
do not use temperature rate 75c. Use 105C.
if you know how to solder. you could save $300 at least! Mahalo!

Posted on Mar 15, 2009

  • 1 Answer

SOURCE: when I turn on my lg lcd tv the picture goes out

Go to http://www.lcdparts.net/LCDTVInverter.aspx and purchase there improved aftermarket inverter boards as the OEM replacements will often soon fail again.

Posted on Nov 14, 2009

omaharox
  • 165 Answers

SOURCE: humming or squealing noise when tv is turned on (model 32LG30)

Be sure you have installed the stand scresw weather or not you are using the stand.
The back panel can vibrate without the screws.

Other sources of a hum are the coils on the power supply.
The power supply would have to be replaced to solve the issue.

Posted on Jan 20, 2010

spr1949
  • 1182 Answers

SOURCE: LG TV KEEPS TURNING OFF

Kindly do not keep attempting to turn it on, as you are likely to spoil some other boards/parts/components of the TV. Look for any loose contacts in power out let, RC jack, cable and socket. In order to ensure, it is not caused by the input device, connect a DVD player
and see. Switch off TV, switch off power, remove plug and wait for 48 hours and retry.
If problem persists, I suggest it is better to refer it to a qualified service technician, since the back cover has to be opened for investigation/rectification.

Posted on Aug 23, 2012

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1)Make sure your TV and Satellite Receiver is ON.
2)Press and hold TV button until all lights on the side of it flashes. The TV button is the second button on the Top left hand side corner of the remote control.
3) Release that button, then press & release RED Button. You will notice TV button is stays on. If, it doesn't stay ON, you must repeat step 2 & 3. Otherwise, your batteries are low, you MUST change then.
4)Press and release the UP Arrow Key on the remote until TV turns off. Notice the UP arrow key button is the button below the volume keys (Stop button for VCR.)
5)Make sure you are aiming remote control to TV while pressing and releasing UP arrow key button. When you find the right code, the TV will turn OFF.
6) Immediately after, TV turns off, press # key.

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Device Codes


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dogbytecomputer.com/codes.htm - 34k - Cached - Similar pages see if you code is in here.like my dishnet.remote,some no namebrand tv's just can't be controlled by other remotes

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4)Press and release the UP Arrow Key on the remote until TV turns off. Notice the UP arrow key button is the button below the volume keys (Stop button for VCR.)
5)Make sure you are aiming remote control to TV while pressing and releasing UP arrow key button. When you find the right code, the TV will turn OFF.
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